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| unit intensity | |||
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单位 密度 : 11 phrases in 10 subjects |
| Agriculture | 1 |
| Animal husbandry | 1 |
| Drilling | 1 |
| Earth sciences | 1 |
| Electric machinery | 1 |
| Electronics | 1 |
| General | 1 |
| Geology | 2 |
| Metallurgy | 1 |
| Technology | 1 |
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